In Exercises 21-38 solve each system of equations using matrices. Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. { 3 y − z = 0 x + 5 y − z = − 1 − 3 x + 6 y + 2 z = 11
In Exercises 21-38 solve each system of equations using matrices. Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. { 3 y − z = 0 x + 5 y − z = − 1 − 3 x + 6 y + 2 z = 11
Solution Summary: The author describes the Gauss-Jordan method used to solve the system of linear equations by turning the augmented matrix in row echelon form.
Directions: Use the equation A = Pet to answer each question and be sure to show all your work.
1. If $5,000 is deposited in an account that receives 6.1% interest compounded continuously, how much money is in the
account after 6 years?
2. After how many years will an account have $12,000 if $6,000 is deposited, and the account receives 3.8% interest
compounded continuously?
3. Abigail wants to save $15,000 to buy a car in 7 years. If she deposits $10,000 into an account that receives 5.7% interest
compounded continuously, will she have enough money in 7 years?
4. Daniel deposits $8,000 into a continuously compounding interest account. After 18 years, there is $13,006.40 in the account.
What was the interest rate?
5. An account has $26,000 after 15 years. The account received 2.3% interest compounded continuously. How much was
deposited initially?
TRIANGLES
INDEPENDENT PRACTICE
ription Criangle write and cow
Using each picture or description of triangle write and solve an equation in ordering the
number of degrees in each angle
TRIANGLE
EQUATION & WORK
ANGLE MEASURES
A
B
-(7x-2)°
(4x)
(3x)°
(5x − 10)
C
(5x – 2)
(18x)
E
3.
G
4.
H
(16x)°
LL
2A=
2B=
ZE=
Answer ASAP and every part, please. Structures.
Chapter 9 Solutions
Blitzer Algebra And Trigonometry, 6th Edition, 9780134585291, 0134585291, 2018
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